Hair roller



FIG. 1 is a front, top and right side isometric projection view of a hair roller showing the present design;

FIG. 2 is a front elevational view of the hair roller; and,

FIG. 3 is a rear, bottom and left side isometric projection view of the hair roller.

The partially disclosed structures on the interior surface of the roller follow the configuration of the portions shown; the annular arrangement of slots thereon being symmetrical. 

The ornamental design for a hair roller, as shown and described. 